Digital BW, The Print

Paul,

The Eboni K4+ approach (Epson 1400) is what I am currently working with to learn 
how to manage the Lab A & Lab B:
K = 100%
M = 30%
C = 9%
Y = 6% (thinking I may change this to 3%)
LC = 100% C (Might change this to 30% C for LC)
LM = 100% M (Might change this to 30% M for LM)

What I recall is one unit of LC lowers Lab B but increases Lab A while 1 unit of 
LM increases Lab B but lowers Lab A. Is this correct? For sanity sake, what is a 
"unit".

It has been several months since I have had time to "play" & couldnt remember 
why I had magenta with a K4 inkset. Complete control of  Lab A & Lab B is the 
goal. Though I am beginning to think it is only possible using Photoshop curves. 
I still have some work & lots of testing in front of me before I solve the 
puzzle. 


 



________________________________
From: Paul <roark.paul@gmail.com>
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Sent: Sun, March 6, 2011 7:49:58 PM
Subject: [Digital BW] Re: Adjusting Lab A and Lab B through ink denisty

  
Phillip Kimble <grimmieoldfart@...> wrote:
>
> ...
> The piece I am thinking about is actually in a footnote of a different 
>document. 
>
> 
> 
> ...
> 
> My objective is to reach a fairly neutral curve on 
> BFK Rives using the K4 approach minimizing the amount 
> of cool ink I am using. It may be a bridge too 
> far as the paper starts off fairly warm.

If you're using what I called the K4+ approach, with LM and LC cooling the MIS 
carbon -- http://www.paulroark.com/BW-Info/4K+.pdf -- then you do have full Lab 
A and B control. More magenta in the mix gives a higher Lab A. Adding LM and LC 
gives a lower Lab B. (That's a bit of a simplification, but not too far off.)

Paul
www.PaulRoark.com 





      

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